Information interaction method based on applications and system thereof

The invention provides an information interaction method based on applications and a system thereof. The method is characterized in that: firstly, applications which are started currently by a terminal side is detected, identifications of the applications started by different terminals are recorded by a network side center server; message interfaces corresponding to one or more applications whichare already started are provided on the terminal side and information input by a user in the message interfaces and the corresponding application identifications are sent to the network side center server; and then, the network side center server forwards the information to the one or more terminals which start the applications; the one or more terminals which receive the information forwarded bythe network side center server displays the information in the message interfaces of the currently started same applications. By using the method of the invention, the network side center server can automatically know the terminal side which starts the same applications. An information interaction mechanism based on the applications which can be widely used is provided for the different terminal sides.